<template>
    <div class="login">
        <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title">享瘦后台管理</h3>
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off" placeholder="账号">
                    <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input v-model="loginForm.password" type="password" size="large" auto-complete="off" placeholder="密码"
                    @keyup.enter="handleLogin">
                    <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="code" v-if="captchaEnabled">
                <el-input v-model="loginForm.code" size="large" auto-complete="off" placeholder="验证码" style="width: 63%"
                    @keyup.enter="handleLogin">
                    <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img" />
                </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin: 0px 0px 25px 0px">记住密码</el-checkbox>
            <el-form-item style="width: 100%">
                <el-button :loading="loading" size="large" type="primary" style="width: 100%"
                    @click.prevent="handleLogin">
                    <span v-if="!loading">登 录</span>
                    <span v-else>登 录 中...</span>
                </el-button>
                <div style="float: right" v-if="register">
                    <router-link class="link-type" :to="'/register'">立即注册</router-link>
                </div>
            </el-form-item>
        </el-form>
        <!--  底部  -->
        <div class="el-login-footer">
            <span>Copyright © 2018-2023 ruoyi.vip All Rights Reserved.</span>
        </div>
    </div>
</template>

<script setup lang="ts">
    import { getCodeImg } from '@/api/login';
    import Cookies from 'js-cookie';
    import { encrypt, decrypt } from '@/utils/jsencrypt';
    import useUserStore from '@/store/modules/user';
    import { useRouter } from 'vue-router';
    import { FormInstance } from 'element-plus';
    import { ref } from 'vue';

    const userStore = useUserStore();
    const router = useRouter();
    const loginForm = ref<any>({
        username: 'admin',
        password: 'admin123',
        rememberMe: false,
        code: '',
        uuid: '',
    });

    const loginRules = {
        username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
        password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
        code: [{ required: true, trigger: 'change', message: '请输入验证码' }],
    };

    const codeUrl = ref('');
    const loading = ref(false);
    // 验证码开关
    const captchaEnabled = ref(true);
    // 注册开关
    const register = ref(false);
    const redirect = ref(undefined);
    const loginRef = ref<FormInstance>();

    function handleLogin() {
        loginRef.value?.validate(valid => {
            if (valid) {
                loading.value = true;
                // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
                if (loginForm.value.rememberMe) {
                    Cookies.set('username', loginForm.value.username, { expires: 30 });
                    const enPwd = encrypt(loginForm.value.password);
                    if (enPwd) {
                        Cookies.set('password', enPwd, { expires: 30 });
                    }
                    if (loginForm.value.rememberMe) {
                        Cookies.set('rememberMe', String(loginForm.value.rememberMe), { expires: 30 });
                    }
                } else {
                    // 否则移除
                    Cookies.remove('username');
                    Cookies.remove('password');
                    Cookies.remove('rememberMe');
                }
                // 调用action的登录方法
                userStore
                    .login(loginForm.value)
                    .then(() => {
                        router.push({ path: redirect.value || '/' });
                    })
                    .catch(() => {
                        loading.value = false;
                        // 重新获取验证码
                        if (captchaEnabled.value) {
                            getCode();
                        }
                    });
            }
        });
    }

    function getCode() {
        getCodeImg().then((res : any) => {
            codeUrl.value = res.data.img;
            loginForm.value.uuid = res.data.uuid;

        });
    }

    function getCookie() {
        const username = Cookies.get('username');
        const password = Cookies.get('password');
        const rememberMe = Cookies.get('rememberMe');
        loginForm.value = {
            username: username === undefined ? loginForm.value.username : username,
            password: password === undefined ? loginForm.value.password : decrypt(password) || '',
            rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        };
    }

    getCode();
    getCookie();
</script>

<style lang="scss" scoped>
    .login {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100%;
        background-image: url('@/assets/images/login-background.jpg');
        background-size: cover;
    }

    .title {
        margin: 0px auto 30px auto;
        text-align: center;
        color: #707070;
    }

    .login-form {
        border-radius: 6px;
        background: #ffffff;
        width: 400px;
        padding: 25px 25px 5px 25px;

        .el-input {
            height: 40px;

            input {
                height: 40px;
            }
        }

        .input-icon {
            height: 39px;
            width: 14px;
            margin-left: 0px;
        }
    }

    .login-tip {
        font-size: 13px;
        text-align: center;
        color: #bfbfbf;
    }

    .login-code {
        width: 33%;
        height: 40px;
        float: right;

        img {
            cursor: pointer;
            vertical-align: middle;
        }
    }

    .el-login-footer {
        height: 40px;
        line-height: 40px;
        position: fixed;
        bottom: 0;
        width: 100%;
        text-align: center;
        color: #fff;
        font-family: Arial;
        font-size: 12px;
        letter-spacing: 1px;
    }

    .login-code-img {
        height: 40px;
        padding-left: 12px;
    }
</style>
